CN107801019B - Multi-view naked eye 3D display area compensation method based on lenticular grating - Google Patents
Multi-view naked eye 3D display area compensation method based on lenticular grating Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 33
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
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- 239000011159 matrix material Substances 0.000 claims description 3
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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Abstract
The invention relates to the field of naked eye 3D display, in particular to a multi-view naked eye 3D display area compensation method based on a lenticular grating. According to the design parameter characteristics of naked eye 3D display equipment, a plurality of areas such as a screen are taken as an independent sub-screen for debugging. The multi-view naked eye 3D display area compensation method based on the lenticular grating can reduce deformation of a liquid crystal screen and deformation of the grating, reduce influence of unevenness generated by the attachment of the liquid crystal screen and the grating on a 3D effect, and improve the naked eye 3D display effect.
Description
Technical Field
The invention relates to the field of naked eye 3D display, in particular to a multi-view naked eye 3D display area compensation method based on a lenticular grating.
Background
At present, bore hole 3D display device based on lenticular technology, its bore hole 3D display screen comprises LCD screen and grating, in the actual production process, because liquid crystal glazing can take place certain deformation in the laminating process, especially based on frame pastes the technique (the LCD screen passes through the mechanism spare with the grating and is fixed together, there is the clearance of certain width between LCD screen and the grating), whether the LCD screen still grating all has deformation, lead to relative unevenness between LCD screen and the grating, light is inhomogeneous when the grating refraction separation, when leading to the final debugging effect, some local 3D effects on the display screen are obvious, some places then have the ghost image fuzzy phenomenon, thereby influence the experience of 3D effect.
However, it is very difficult to reduce the deformation of the liquid crystal panel and the grating and the unevenness of the liquid crystal panel and the grating by improving the process, and the production cost is high.
Disclosure of Invention
Aiming at the technical problems of deformation of a liquid crystal screen and a grating and unevenness caused by the attachment of the liquid crystal screen and the grating, the invention provides a method for performing area compensation and adjustment on a 3D display screen through a software algorithm.
The specific technical scheme is as follows:
a multi-view naked eye 3D display area compensation method based on lenticular grating is characterized in that a plurality of areas such as a screen are taken as an independent sub-screen to be debugged according to design parameter characteristics of naked eye 3D display equipment; the specific debugging process is as follows:
(1) firstly, a calculation formula (1) of a multi-view sub-pixel mapping matrix of the multi-view naked eye 3D display device based on the lenticular grating is given:
N=(（k+k off -3l tanα）modX/X )/N tot (1)
wherein,Nrepresents the position coordinates of (k,l) The parallax map corresponding to the sub-pixels of the liquid crystal screen;
k off the number of the sub-pixels representing the relative displacement between the left edge of the visible area of the liquid crystal screen and the left edge of the grating unit;
αthe included angle of the grating is the inclined angle relative to the vertical direction of the liquid crystal screen;
Xthe number of viewpoints covered by a single lenticular grating edge;
N tot representing the total number of viewpoints;
whereinαAndXis a main parameter influenced by the deformation of the liquid crystal screen and the grating and the unevenness of the joint of the liquid crystal screen and the grating;
(2) dividing the display area of the liquid crystal screen into regions with the same sizen×mSub-regions in which the horizontal direction isnIn the vertical directionmA plurality of;
(3) regarding each sub-area as an independent display screen, the display screen is divided into a plurality of sub-areasαAndXthe value of (c) can be expressed as:
（α 1,1 ,X 1,1 ），（α 1,1 ,X 1,2 ）…（α x,y ,X x,y ) Therein is disclosedx=1..m，y=1..n. The disparity map of the corresponding sub-region is:N 1,1 ，N 1,2 …N x,y (ii) a Whereinx=1..m，y=1..n；
(4) Adjusting the sub-regions from a fixed angle and a fixed line-of-sight measurement pointαAndXsuch that the current disparity map of each sub-regionNEqual or maximally close to equal, the resulting sub-regionsαAndXthe value array of (1) is a final compensation array;
(5) calculate which sub-region (k, l) is in, and substitute the compensation array into equation (1), resulting in equation (2):
N=(（k+k off -3l tanα x,y ）modX x,y /X x,y )/N tot (2)
wherein (x-1) W/m is not less than k is not more than x W/m, (y-1) H/n is not less than l is not more than y H/n;
w is the number of sub-pixels in the horizontal direction of the liquid crystal screen, and H is the number of sub-pixels in the vertical direction of the liquid crystal screen;
(6) according to the formula, the naked eye 3D image can be calculated according to a region equal division method.
The multi-view naked eye 3D display area compensation method based on the lenticular grating can reduce deformation of a liquid crystal screen and deformation of the grating, reduce influence of unevenness generated by the attachment of the liquid crystal screen and the grating on a 3D effect, and improve the naked eye 3D display effect.
Detailed Description
The specific technical scheme of the invention is described by combining the embodiment.
A multi-view naked eye 3D display area compensation method based on lenticular grating is characterized in that a plurality of areas such as a screen are taken as an independent sub-screen to be debugged according to design parameter characteristics of naked eye 3D display equipment; the specific debugging process is as follows:
(1) firstly, a calculation formula (1) of a multi-view sub-pixel mapping matrix of the multi-view naked eye 3D display device based on the lenticular grating is given:
N=(（k+k off -3l tanα）modX/X )/N tot (1)
wherein,Nrepresents the position coordinates of (k,l) The parallax map corresponding to the sub-pixels of the liquid crystal screen;
k off the number of the sub-pixels representing the relative displacement between the left edge of the visible area of the liquid crystal screen and the left edge of the grating unit;
αthe included angle of the grating is the inclined angle relative to the vertical direction of the liquid crystal screen;
Xthe number of viewpoints covered by a single lenticular grating edge;
N tot representing the total number of viewpoints;
whereinαAndXis a main parameter influenced by the deformation of the liquid crystal screen and the grating and the unevenness of the joint of the liquid crystal screen and the grating;
(2) dividing the display area of the liquid crystal screen into regions with the same sizen×mSub-regions in which the horizontal direction isnIn the vertical directionmA plurality of;
(3) regarding each sub-area as an independent display screen, the display screen is divided into a plurality of sub-areasαAndXthe value of (c) can be expressed as:
（α 1,1 ,X 1,1 ），（α 1,1 ,X 1,2 ）…（α x,y ,X x,y ) Therein is disclosedx=1..m，y=1..n. The disparity map of the corresponding sub-region is:N 1,1 ，N 1,2 …N x,y (ii) a Whereinx=1..m，y=1..n；
(4) Adjusting the sub-regions from a fixed angle and a fixed line-of-sight measurement pointαAndXsuch that the current disparity map of each sub-regionNEqual or maximally close to equal, the resulting sub-regionsαAndXthe value array of (1) is a final compensation array;
(5) calculate which sub-region (k, l) is in, and substitute the compensation array into equation (1), resulting in equation (2):
N=(（k+k off -3l tanα x,y ）modX x,y /X x,y )/N tot (2)
wherein (x-1) W/m is not less than k is not more than x W/m, (y-1) H/n is not less than l is not more than y H/n;
w is the number of sub-pixels in the horizontal direction of the liquid crystal screen, and H is the number of sub-pixels in the vertical direction of the liquid crystal screen;
(6) according to the formula, the naked eye 3D image can be calculated according to a region equal division method.
Claims (1)
1. A multi-view naked eye 3D display area compensation method based on lenticular gratings is characterized in that a screen is equally divided into a plurality of areas according to design parameter characteristics of naked eye 3D display equipment, and each area is taken as an independent sub-screen for debugging; the specific debugging process is as follows:
(1) firstly, a calculation formula (1) of a multi-view sub-pixel mapping matrix of the multi-view naked eye 3D display device based on the lenticular grating is given:
N＝((k+koff-3ltanα)modX/X)Ntot (1)
wherein, N represents the serial number of the parallax map corresponding to the sub-pixel of the liquid crystal screen with the position coordinate of (k, l), and the value range is 1, 2 …
Ntot；
koff represents the number of sub-pixels of relative displacement between the left edge of the visible area of the liquid crystal screen and the left edge of the grating unit;
alpha is an inclined included angle of the grating relative to the vertical direction of the liquid crystal screen;
x is the number of viewpoints covered by a single lenticular grating edge;
ntot represents the total number of viewpoints;
wherein alpha and X are main parameters influenced by the deformation of the liquid crystal screen and the grating and the unevenness of the joint of the liquid crystal screen and the grating;
(2) dividing a liquid crystal display area into n multiplied by m sub-areas with the same size, wherein n is arranged in the horizontal direction, and m is arranged in the vertical direction;
(3) considering each sub-area as an independent display screen, the values of α and X for each sub-area can be expressed as:
(α 1, 1, X1, 1), (α 1, 1, X1, 2) … (α X, y, Xx, y); wherein x is 1 … m and y is 1 … n;
the disparity map of the corresponding sub-region is: n1, 1, N1, 2 … Nx, y; wherein x is 1 … m and y is 1 … n;
(4) adjusting the values of alpha and X of each sub-area from a certain fixed angle and a fixed sight distance measuring point to ensure that the current disparity maps N of each sub-area are equal or nearly equal to each other to the maximum extent, and obtaining a value array of alpha and X of each sub-area as a final compensation array;
(5) calculate which sub-region (k, l) is in, and substitute the compensation array into equation (1), resulting in equation (2):
N＝((k+koff-3ltanαx，y)modXx，y/Xx，y)Ntot (2)
wherein (x-1) W/m is not less than k is not more than x W/m, (y-1) H/n is not less than l is not more than y H/n;
w is the number of sub-pixels in the horizontal direction of the liquid crystal screen, and H is the number of sub-pixels in the vertical direction of the liquid crystal screen;
(6) according to the formula (2), the naked eye 3D image can be calculated according to a regional equal division method.
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| CN110430419B (en) * | 2019-07-12 | 2021-06-04 | 北京大学 | Multi-view naked eye three-dimensional image synthesis method based on super-resolution anti-aliasing |
| CN112929640A (en) * | 2019-12-05 | 2021-06-08 | 北京芯海视界三维科技有限公司 | Multi-view naked eye 3D display device, display method and display screen correction method |
| CN114967170B (en) * | 2021-02-18 | 2023-07-18 | 清华大学 | Display processing method and device based on flexible naked eye three-dimensional display equipment |
| CN113347407A (en) * | 2021-05-21 | 2021-09-03 | 华中科技大学 | Medical image display system based on naked eye 3D |
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| JP2012002866A (en) * | 2010-06-14 | 2012-01-05 | Sony Corp | Optical device for three-dimensional display and three-dimensional display device |
| JP5673008B2 (en) * | 2010-08-11 | 2015-02-18 | ソニー株式会社 | Image processing apparatus, stereoscopic image display apparatus and stereoscopic image display system, parallax deviation detection method for stereoscopic image display apparatus, and manufacturing method for stereoscopic image display apparatus |
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Effective date of registration: 20210707 Address after: Room 1905, No.8 Jingang Avenue, Nansha street, Nansha District, Guangzhou, Guangdong 510000 Patentee after: Guangzhou big eye cat Medical Instrument Technology Co.,Ltd. Address before: 510000 room 1209, No. 100, Huangpu Avenue West, Tianhe District, Guangzhou City, Guangdong Province Patentee before: GUANGDONG YUNGU MEDIA Co.,Ltd. |